1.List轉換成爲數組。(這裏的List是實體是ArrayList)
List list = new ArrayList();
list.add("1");
list.add("2");
final int size = list.size();
String[] arr = (String[])list.toArray(new String[size]);
2.數組轉換成爲List。
String[]
arr = new String[] {"1", "2"};
List list = Arrays.asList(arr);